Home / 1,286,942.45-1,930,427.44-388,392.23

Finding the Fourth Proportional to 1,286,942.45, 1,930,427.44 and 388,392.23

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Solution

The fourth proportional to 1,286,942.45, 1,930,427.44 and 388,392.23 is: 582,592.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,942.45 : 1,930,427.44 = 388,392.23 : x
  2. Step 2: Convert to fraction form
    1,286,942.45/1,930,427.44 = 388,392.23/x
  3. Step 3: Cross multiply
    1,286,942.45x = 1,930,427.44 × 388,392.23
  4. Step 4: Simplify right side
    1,286,942.45x = 749,763,022,129.88
  5. Step 5: Solve for x
    x = 749,763,022,129.88/1,286,942.45
  6. Step 6: Final answer
    x = 582,592.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.